[quote=Magic Magnum]
Barely do I find an atheist who is doing it out of rebellion or hate for the world.
[/quote]

I have to agree wit Magnum, here. Very atheistic, nihilistic ideologies such as Nietzche's or Ayn Rand's tend to be very optimistic about human nature and the world (Humans are so good, that just by following our first hedonistic urge we can make the world a better place). The bible, by contrast, is rather cynical (basically, "the world" is a horrible place that can only be saved by divine intervention, one that Christians should try to distance themselves from somewhat). Mind you, I tend to agree with the bible's cynicism. Case in point, though: the world being a terrible place is a prediction of the bible, and it would actually make more sense for Atheists to be optimistic by nature.